Is Shellos Good in HeartGold & SoulSilver Playthrough?
Breed-only. Water with AbilitySticky Hold. Gastrodon at level 30 becomes Water/Ground with only Grass weakness. Quagsire fills the same slot natively without breeding.
Shellos trades roughly evenly with Falkner's team.
Shellos trades roughly evenly with Bugsy's team.
Shellos trades roughly evenly with Whitney's team.
Gastrodon trades roughly evenly with Morty's team.
Chuck's typing presses Gastrodon's defenses.
Gastrodon resists most of Jasmine's coverage and hits back hard.
Gastrodon has the type edge here and should clean up Pryce's team.
Gastrodon trades roughly evenly with Clair's team.
Gastrodon resists most of Brock's coverage and hits back hard.
Gastrodon trades roughly evenly with Misty's team.
Gastrodon resists most of Lt. Surge's coverage and hits back hard.
Gastrodon trades roughly evenly with Erika's team.
Gastrodon has the type edge here and should clean up Janine's team.
Gastrodon trades roughly evenly with Sabrina's team.
Gastrodon resists most of Blaine's coverage and hits back hard.
Gastrodon trades roughly evenly with Blue's team.
Gastrodon trades roughly evenly with Will's team.
Gastrodon has the type edge here and should clean up Koga's team.
Gastrodon has the type edge here and should clean up Bruno's team.
Gastrodon has the type edge here and should clean up Karen's team.
Gastrodon trades roughly evenly with Lance's team.
Hatch
Hatch Shellos from an Egg you breed on Route 34.
Recommended Moves
- LV 7WaterWater PulsePower 90Accuracy 100%PP 20
- After Bugsy
- TM14IceBlizzardPower 120Accuracy 70%PP 5Goldenrod Department Store
- TM13IceIce BeamPower 95Accuracy 100%PP 10Goldenrod Game Corner
- TUTORNormalHeadbuttPower 70Accuracy 100%PP 15Ilex Forest
- After Whitney
- HM03WaterSurfPower 143Accuracy 100%PP 15Gift from a Kimono Girl in the Ecruteak Dance Theater
- LV 29NormalBody SlamPower 85Accuracy 100%PP 15
- After Jasmine
- TM43NormalSecret PowerPower 70Accuracy 100%PP 20Lake of Rage
- LV 37WaterMuddy WaterPower 143Accuracy 85%PP 10
Evolve Shellos to Gastrodon
Shellos evolves into Gastrodon at Level 30. Your Shellos should hit Level 30 before you reach Morty, at typical leveling pace.
Recommended Moves
- After Bugsy
- TM28GroundDigPower 120Accuracy 100%PP 10National Park
- TM15NormalHyper BeamPower 150Accuracy 90%PP 5Goldenrod Department Store
- TM13IceIce BeamPower 95Accuracy 100%PP 10Goldenrod Game Corner
- After Whitney
- HM03WaterSurfPower 143Accuracy 100%PP 15Gift from a Kimono Girl in the Ecruteak Dance Theater
- After Pryce
- HM07WaterWaterfallPower 120Accuracy 100%PP 15Item ball on Ice Path 1F
- After Jasmine
- TM36PoisonSludge BombPower 90Accuracy 100%PP 10Route 43
- LV 41WaterMuddy WaterPower 143Accuracy 85%PP 10
- After Clair
- TM26GroundEarthquakePower 150Accuracy 100%PP 10Victory Road
How to Get Shellos in HeartGold & SoulSilver
Shellos can't be caught in HeartGold & SoulSilver. Transfer one in from Diamond & Pearl or Platinum.
How to Obtain Shellos in HGSS
- Step 1Shellos ✓CARTRIDGE TRADEfrom Diamond & PearlAvailableCatch in Diamond & Pearl via Walking · Route 213, then trade to the current game via link cable.CARTRIDGE TRADEfrom PlatinumAvailableCatch in Platinum via Walking · Route 205, then trade to the current game via link cable.LATER APPEARANCENot TradeableAppears in Omega Ruby & Alpha Sapphire via Walking · Route 103 · DexNav chain. Forward-only transfer — no path back to this game from a later one.LATER APPEARANCENot TradeableAppears in Ultra Sun & Ultra Moon via In-game trade · Seafolk Village · Trade for (give Granbull). Forward-only transfer — no path back to this game from a later one.LATER APPEARANCEfrom Sword & ShieldNot TradeableAppears in Sword & Shield via Surfing · Dusty Bowl · Intense Sun. Forward-only transfer — no path back to this game from a later one.
- Step 2Evolve into Gastrodon
How to Get Shiny Shellos in HeartGold & SoulSilver
Shellos hatches from an egg, so pair it with a foreign-language parent the Masuda way for a shiny. Compare Shiny Shellos odds across every game
HeartGold & SoulSilver Shiny Shellos Calculator
1 MethodThe only route here is Masuda Method, about 1 in 1,639 on each try.
Masuda Method: Breed with a parent from a different-language game. Works on any breedable line.
How many you have done, or plan to do.
| Chance | Encounters | Time |
|---|---|---|
| 10%lucky few | 173-- | -- |
| 25%one in four | 472-- | -- |
| 50%coin flip | 1,136-- | -- |
| 90%very likely | 3,773-- | -- |
Time assumes -- at your pace and does not change your shiny odds.
How is this calculated?
Every encounter has the same shiny chance, the Shiny Odds Per Try shown above. Each one is a separate roll that does not care how many you have already done, so the more you hunt, the higher your overall chance of at least one shiny. The formula below turns your odds and your number of tries into that combined chance.
chance after N tries = 1 − (1 − p)^N, where p = 1 / odds per try
Example at 1 in 8,192 (classic full odds): about 864 encounters for a 10 percent chance, 5,678 for 50 percent, and 18,862 for 90 percent.
The table above flips that around: it shows how many encounters it takes to reach a 10, 25, 50, and 90 percent chance at your current odds. Turning on boosts like the Shiny Charm, sandwiches, or chains improves your odds, so the encounter numbers drop.
These are estimates, not promises. Most games have no pity counter, meaning no guaranteed shiny no matter how many you hunt, so even Very Likely is not guaranteed: some hunters find one early, others go well past that point.
Curious how fast a hunt could go? Work out your HeartGold & SoulSilver shiny odds for Shellos.
Shellos Weakness
Type-wise, Shellos takes extra damage from Electric and Grass. The Water typing picks up 4 resistances to work with. Storm Drain grants an additional Water immunity, reshaping the matchup chart.
| Damage | Types |
|---|---|
| 2x (Weak) | Electric, Grass |
| 0.5x (Resist) | Fire, Water, Ice, Steel |
- Fairy type does not exist — Dragon has fewer checks
- Physical / Special split now per-move (introduced Gen IV)
What is Shellos Weak Against
GoodBest Pokemon Against Shellos
 Roserade GrassPoison | B | |
 Cacturne GrassDark | B | |
 Parasect BugGrass | C | |
 Sceptile Grass | B | |
Obtain MethodEvolve Treecko (Silph Co Gift) | ||
 Tangrowth Grass | C | |
Available Moves Moves
Damage vs Shellos View Tangrowth builds →Solar Beam 2x142-167%KO Shock Wave 2x48-57% | ||
 Victreebel GrassPoison | C | |
 Venusaur GrassPoison | C | |
Obtain MethodEvolve Bulbasaur (Pallet Town Gift) | ||
 Vileplume GrassPoison | C | |
 Shiftry GrassDark | C | |
 Ludicolo WaterGrass | C | |
 Raikou Electric | B | |
 Carnivine Grass | C | |
 Breloom GrassFighting | A | |
 Meganium Grass | C | |
Obtain MethodEvolve Chikorita (New Bark Town Gift) | ||
Shellos Evolutions
Shellos is the base form in a two-stage line leading to Gastrodon. Check the evolution method below. A decent partner pool for breeding via two egg groups. Eggs take an average time to hatch. Evolving adds up to 150 stat points total. View every chain in the Evolution Chart.
How to Evolve
Breeding
Breed Shellos easily with 31 breeding partners from the Amorphous and Water 1 egg groups. Pass egg moves like Amnesia, Counter, Curse and 9 more to offspring.
HGSS Shellos Best Moveset
57 Sp. Atk for basic special Water attacks with AbilityStorm Drain redirecting Water moves in doubles for a Sp. Atk boost. Gastrodon takes over with real stats and Ground typing.
Best Build
Shellos best EVs are Speed and Sp. Atk
Special Revenge Killer Moveset
- Surf
- Earth Power
- Ice Beam
- Hidden Power Grass
Recommended Teammates
Moves List
Breeding's the move. Amnesia and Counter give Shellos options it can't learn any other way, and coverage across 7 types already covers a decent range on top of Muddy Water and Surf. The egg moves push it further.
How to Read the Moves Table
Tabs
- Level-Up
- Learned by leveling up.
- TM
- Taught by a Technical Machine.
- Egg
- Inherited via breeding.
- Tutor
- NPC tutor (cost: items, BP, money).
- Reminder
- An NPC reteaches any move this Pokemon could have learned by leveling up.
- Transfer
- Carried over from an older game using Pokemon HOME.
- Event
- Given out through Mystery Gift events.
Visual Signals
CAT (Category)
How the move deals damage and which stats it uses.
A small dot on the icon's corner marks the move as contact. That triggers abilities like Static, Flame Body, Rough Skin, or Iron Barbs, plus items like Rocky Helmet and Sticky Barb.
Tier (S to D)
Each move's competitive rank in RankedBoost's system. TM, Egg, and Tutor sort by tier by default (best first). On Level-Up, click the Tier header to do the same.
PWR (Power)
Base damage. Numbers shown in a type color include STAB (base × 1.5). Hover any colored number to see the math.
— means no power (status moves) or variable power.
Sorting & Filter
Click any column header to sort. Level-Up opens with Lv 1 at the top. TM, Egg, and Tutor open with the highest-tier moves at the top.
Search filters by move name or type. The Filter button limits the list to STAB, Physical, Special, or Status moves.
Level-Up Moves
TM Moves
All 17 TMs are obtainable before the Elite Four
Egg Moves
Tutor Moves
Base Stats
Its shape and coloration vary, depending on its habitat.
Shellos HeartGold & SoulSilver Guide
In HeartGold & SoulSilver, for a casual playthrough, Shellos works as a placeholder. Water coverage is useful early. The real payoff is Gastrodon. That's where the stats start mattering.
Game Availability
Debuting in Diamond & Pearl, Shellos appears in 13 games across 6 generations. A reliable presence in a solid number of games, typically found through catching or hatching as a base form.
Click a game to view version-specific details
- Gen 1RB
Red & Blue - Gen 1Y
Yellow - Gen 2GS
Gold & Silver - Gen 2C
Crystal - Gen 3RS
Ruby & Sapphire - Gen 3E
Emerald - Gen 3FRLG
FireRed & LeafGreen - Gen 4DPDebut
Diamond & Pearl - Gen 4Pt
Platinum - Gen 4HGSS
HeartGold & SoulSilver - Gen 5BW
Black & White - Gen 5B2W2
Black 2 & White 2 - Gen 6XY
X & Y - Gen 6ORAS
Omega Ruby & Alpha Sapphire - Gen 7SM
Sun & Moon - Gen 7USUM
Ultra Sun & Ultra Moon - Gen 7Let's Go
Let's Go Pikachu & Eevee - Gen 8SwSh
Sword & Shield - Gen 8BDSP
Brilliant Diamond & Shining Pearl - Gen 8PLA
Legends: Arceus - Gen 9SV
Scarlet & Violet - Gen 9LZA
Legends: Z-A - Gen 10WW
Winds & Waves
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